Hi Gaar, you have got me interested. Could you post some more pictures with the bone rotated round so we can see it from all directions, also could you put a ruler in the pictures, Thanks. Where did you find it, farm land, on a beach, serengeti?

Thanks Gaar. I have considered four posibilities considering the location and size; Cow or Horse and Humerus or Femur. I favour horse humerus, it is just the very end closest to the shoulder. Its not a perfect match so if anyone would like to make another suggest please do.